Which of the following structures contain
oxygen-poor blood?
a. left ventricle
b. left atrium
c. aorta
d. pulmonary arteries
e. pulmonary veins
D
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One of the more formidable obstacles to mammalian gene cloning is the presence of
A) introns. B) exons. C) repressors. D) integrators.
Which of the following statements regarding cancer is false?
A) Rate of cell division is critical. B) Balance between differentiation and proliferation is important. C) As cells become more differentiated, their capacity to divide decreases. D) Balance in cell growth is achieved when division results in no net gain of cells. E) In tumor cells, division and differentiation are uncoupled.
The epididymis functions solely to store sperm
Indicate whether the statement is true or false
Bacteria that divide in multiple planes and form grapelike clusters are called
a) streptococci. b) staphylococci. c) coccobacilli. d) vibrios.